expiration_state.py 文件源码

def expir_states_ao_state(self):
        """
        float: Specifies the state to set the analog output physical
            channels when the watchdog task expires.
        """
        val = ctypes.c_double()

        cfunc = lib_importer.windll.DAQmxGetWatchdogAOExpirState
        if cfunc.argtypes is None:
            with cfunc.arglock:
                if cfunc.argtypes is None:
                    cfunc.argtypes = [
                        lib_importer.task_handle, ctypes_byte_str,
                        ctypes.POINTER(ctypes.c_double)]

        error_code = cfunc(
            self._handle, self._physical_channel, ctypes.byref(val))
        check_for_error(error_code)

        return val.value